Good writeup on Facebook M suggestions by @JoshConstine in TechCrunch:
https://techcrunch.com/2017/04/0...
Write “You owe me $20” and Messenger will suggest you use its payments feature. If someone says “goodbye,” Messenger will recommend a “bye-bye” GIF. That’s how Facebook’s new M Suggestions work.
Facebook’s artificial intelligence assistant will privately interject these recommendations above the redesigned one-line message composer in your Messenger conversations, and your friends won’t see the results unless you approve. M Suggestions roll out to all iOS and Android users in the U.S. today, with more countries coming.